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Chemistry General Science Test Easy Mode MCQs With Answers
Question # 1
An ________________ scientist arranged the elements in order in periodic table.
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English
Italian
African
Indian
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Question # 2
Increase in ________________ increase evaporation.
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Temperature
Stronger
All
None of above
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Question # 3
The no. of periods in modern periodic table are
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7
11
18
23
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Question # 4
The valency of nitrogen is
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1
2
3
4
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Question # 5
Metal oxides are
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Amphoteric
Basic
Acidic
Neutral
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Question # 6
In 9th century scientist accepted by:
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Dalton
Bohars
Rutherford
Nil
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Question # 7
Sodium - potassium alloy is used in nuclear reactor as a:
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catalyst
coolant
reactant
absorber
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Question # 8
Metal can form ions carrying charges:
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Uni-positive
Di-positive
Tri-Positive
All of them
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Question # 9
Which is an acceptor molecule/ion?
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N
2
O
2
H
+
CH
4
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Question # 10
The atomic number of potassium is:
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11
15
18
19
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Question # 11
Potassium's atomic no. is :
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17
18
19
20
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Question # 12
Which one is Lewis Acid?
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BF
3
AICI
3
FeCl
3
All of these
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Question # 13
Which one contains double covalent bound?
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Pentane
Ethylene
Acetylene
All
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Question # 14
Water dissolves non-ionic compound by
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Ion-ion forces
Ion-dipole forces
Dipole -dipole forces
Hydrogen bonding.
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Question # 15
Thermosphere lies beyond.
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Stratosphere
Troposphere
Mesosphere
Biosphere
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Question # 16
Conversion of dead plants into coal by the action of bacteria and heat is called.
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Carbonization
Catenation
Hydrogenation
Cracking
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Question # 17
An equilibrium is achievable only in a:
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big system
small system
open system
closed system
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Question # 18
When the magnitude of Kc is very large in indicates.
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Reaction never go to completion
Reaction is in equilibrium state
Reaction will complete after some time
Reaction has almost to completion
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Question # 19
On which bases froth floatation process take place?
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Density bases
Concentration basis
Watting basis
None of these
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Question # 20
The branch of chemistry which deals with the study of hydrocarbons and their derivatives is known as.
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Organic chemistry
Inorganic chemistry
Biochemistry
Nuclear chemistry
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Question # 21
Amino acid are the building blocks of .
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Proteins
Carbohydrates
Vitamins
fats
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Question # 22
The general formula of alkane is
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C
n
H
2n+2
C
n
H
2n-2
C
n
H
2n
C
n
H
2n+1
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Question # 23
In which , case particles are separated from each other.
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Fusion
Condensation
Neutralizations
Vaporization
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Question # 24
Which properties of liquid is measured by polarimeter
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Conductance
Refractive index
Optical activity
Change in volume
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Question # 25
How many moles of water results by burning 4 mole of H2 with excess of oxygen.
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1 mol
2 mol
3 mol
4 mol
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Question # 26
The pH of 10
-3
mol dm
-3
of an aqueous solution of H
2
SO
4
is
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3.0
2.7
2.0
1.5
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Question # 27
The rate of reaction
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Increases
Decreases
Remains the same
May decrease of increase
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Question # 28
Actual yield is mostly less than the theoretical yield due to the reason that
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Rates of reactions are slow
Loss of the product during handling
Reactions are never completed 100%
Law of conservation of mass is not true
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Question # 29
I molar volume of a gas at S.T.P is occupied by
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1 g of gas
6 x 10
23
g of gas
22.4 m
3
of gas
1 gram molecular mass of gas
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Question # 30
The long chains of amino acids are coiled about one another onto a spiral by
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Ionic bond
Van der walls forces
Hydrogen bonding
Overlapping of orbitals
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Question # 31
Conductivity of metal decreases by increasing temperature because.
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Atoms are converted to ions
Atoms oscillates and hinder the movement of free electrons.
Ions are converted into atoms
Velocity of mobile electrons increases
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Question # 32
The wave number of the light emitted by a certain source is 2 x 10
6
m. the wavelength of this light is
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500 nm
500 m
200 nm
5 x 10
7
m
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Question # 33
Rutherford's model of atom failed because.
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The atom did not have a nucleus and electron
It did not account for the attraction between protons and neutrons.
It did not account for stability of the atom
There is actually no space between the nucleus and the electrons.
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Question # 34
Which one of the following products is not formed when acetic acid reacts with PCl5
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C2H5Cl
HCl
POCl3
CH3COCl
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Question # 35
Which gas is used for artificial ripening of fruits
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Ethene
Metheane
Propane
Ethyne
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Question # 36
Malonic acid is
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Aromatic monocarboxylic acid
Aromatic dicarboxylic acid
Aliphatic monocarboxylic acid
Aliphatic di carboxylic acid
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Question # 37
Absolute alcohol can be obtained from rectified spirit by
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By adding sodium metal
By extraction
By predistillation in the presence of CaO
Not possible because of azeotropic mixture
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Question # 38
Secondary alkyl halides are those in which halogen atom is attached with a carbon atom which is further attached to.
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One beta carbon
Two beta carbon
Three beta carbon
Four beta carbon
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Question # 39
Ca Mg3 (SiO3)2 is the composition of.
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Dolomite
Gypsum
Calcite
Asbestos
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Question # 40
Boric acid can not be used.
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As antiseptic in medicine
For washing eyes
In soda bottle
For enamels and glazes
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Question # 41
Which halogen occurs naturally in a positive oxidation state.
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Fluorine
Chlorine
Bromine
Iodine
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Question # 42
The reaction of alkyl halides with sodium metal in the presence of ether to from alkane is known as.
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Wortz reaction
Frankland reaction
Sabatier sendron
Kolbe's synthesis
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Question # 43
Which complex shows zero oxidation state of the transition metal.
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[Fe(CO)5]
K3[Fe(CN)6]
K2[Fe(CN)6]
[Cu(NH3)4]SO4
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Question # 44
All of the followings react with Fehling solution except
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CH2CH2CHO
CH3-CH2COCH3
HCHO
CH3-CHO
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